Abstract: The purpose of this laboratory is to convert benzophenone to diphenylmethanol. This was done by using sodium borohydride to reduce benzophenone. The product was then crystalized from hexanes then using the melting point and IR testing it was possible to characterize it. The melting point range was… Introduction: This lab is possible because of oxidation and reduction reactions. In organic chemistry oxidation is the loss of electron density around a carbon‚ while reduction is an increase
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University of Santo Tomas Faculty of Pharmacy Organic Chemistry Laboratory RECRYSTALLIZATION OF ACETANILIDE USING WATER AS SOLVENT Lagarteja‚ M.C.B.; Lim‚ H.G.N.; Lizo‚ K.J.R.; *Macalino‚ M.D.L.; Macapala‚ C. 2D-Pharmacy‚ Faculty of Pharmacy‚ University of Santo Tomas Abstract Recrystallization is a technique used to purify organic solids. This method involves dissolving of a solute in a solvent and inciting the solute to produce a precipitate from a solution. In this experiment‚ acetic
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Solution Review Complete all questions in this package. Be careful to use correct significant figures and units for any calculation problems. For all chemical equations use phase subscripts. Concentration 1. Calculate the concentration of the solution formed when 23.61 g of sodium phosphate is dissolved in 475.0 cm3 of water. 2. What volume of water is needed to dissolve 85.8 g of silver nitrate to make a 2.650 M solution? 3. What mass of magnesium sulphate is needed to make 1500
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Experiment # 4a Title: Determination of the Hardness of Water from a Waterfall Aim: To determine the molarity of EDTA and to determine the hardness of water by measuring the concentrations of calcium and magnesium in a water sample by titration. Abstract: The aim of this experiment was to determine the molarity of a sample of EDTA and then to use this sample to determine the hardness of a sample of water. This was done using a titrimetric method. This was standardized using calcium chloride.
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Computerized Data Acquisition of a Second Order Reaction Abstract Introduction The rates at which reactions occur depend on the composition and the temperature of the reaction mixture. Usually the rate of reaction is found to be proportional to the concentrations of the reactants raised to a power.1 There are many reactions that have a rate law in the form of: (1) v = k[A]a[B]b According to reference1 the power to which the concentration of a species (product or reactant) is raised
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(large)‚ boiling tubes with stoppers x 12‚ boiling tube rack‚ scalpel‚ a pair of tongs‚ 2 pipettes (± 0‚1ml)‚ balance (±0‚1g)‚ 2 beakers‚ marker‚ sucrose solutions (0.0M‚ 0.1M‚ 0.2M‚ 0.3M‚ 0.4M‚ 0.5M)‚ distilled water‚ filter paper‚ cork borer and Erlenmeyer flask with stopper. Teacher’s instructions: ▪ The initial mass of every piece of potato should be similar and even. ▪ In the graphs‚ instead of joining all the points‚ having as a result a gorge line‚ we should draw the best fit line‚ thus having
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acetic anhydride in an Erlenmeyer flask. 4. Add 0.5 ml of concentrated sulfuric acid. 5. Heat for 30 minutes at a temperature of 70o C‚ slowly stirring the mixture gently. Use the hot water bath under the fume hood‚ and insert a thermometer in the flask to monitor the temperature; make sure the temperature does not exceed 70o C. 6. Allow the flask to cool down to around 50o C. 7. Measure 750 ml of cold tap water. 8. Pour the cold water into the mixture. 9. Prepare a Buchner flask. 10. Insert the Buchner
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EXPERIMENT NO. 15 PROTEIN CHARACTERIZATION BY ELECTROPHORESIS Abstract The molecular weights of protein extracts were assessed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Two sets of four protein samples‚ standard bovine serum albumin (BSA)‚ invertase‚ egg albumin‚ and casein‚ were prepared; one set containing β-mercaptoethanol (BME) while the other did not. These were then analyzed through SDS-PAGE with 12.5% resolving gel‚ prepared using 2 M Tris-HCl at pH 8
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is a soft metal‚ it will most likely bond to Sulfur because they are both soft. 20A Preparation of CuCl2~2DMSO Experimental We prepared the sample by synthesizing Copper Chloride with DMSO. 0.160 grams of CuCl2~2DMSO was added to a 10 mL Erlenmeyer flask with a magnetic stir bar. Than 1 mL of absolute ethanol
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pieces in order to expose fresh metal by removing possible magnesium oxide that was on the surface of the turnings. The turnings were added to the round bottom flask as well as an iodine crystal‚ which facilitates the reaction by cleaning the surface of the magnesium metal. Bromobenzene and anhydrous diethyl ether were then added to the flask. Anhydrous ether was used because at this point‚ no water was to enter the reaction. The reaction was triggered by swirling and the heat of a human hand. From
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